What can I expect after being arrested for a DUI in California?
Asked in Santa Ana, CA on May 4, 2018 Last answered on April 25, 20262 answers
If you are arrested for a DUI in California, the process typically unfolds in several stages—from the initial traffic stop through court proceedings—and understanding each step can help you know what to expect.
It usually begins with a traffic stop, where a law enforcement officer must have a lawful basis to pull you over. This could include an observed traffic violation (such as speeding, weaving, or running a red light) or reasonable suspicion that you are driving under the influence. Once stopped, the officer will begin a DUI investigation, which often includes observing your driving pattern, your appearance (red eyes, slurred speech), and your behavior.
The officer may ask you to perform Field Sobriety Tests (FSTs), which are designed to assess coordination, balance, and divided attention. These are commonly referred to as Standardized Field Sobriety Tests (SFSTs) and typically include:
- The Horizontal Gaze Nystagmus (HGN) test (tracking eye movement)
- The Walk-and-Turn test
- The One-Leg Stand test
These tests are meant to help the officer form an opinion about impairment, but they are subjective and can be influenced by factors like fatigue, medical conditions, or anxiety.
You may also be asked to take a Preliminary Alcohol Screening (PAS) test, which is a roadside breath test. For most drivers (not on DUI probation), this test is optional, but refusing it can still raise suspicion. Based on the totality of observations—including driving behavior, FST performance, statements, and PAS results—the officer will determine whether there is probable cause to arrest you for DUI.
If arrested, you will be taken into custody and required to take a chemical test (breath or blood) under California’s implied consent law. Refusing this test can lead to additional penalties, including a longer license suspension. The chemical test is used to determine your Blood Alcohol Concentration (BAC), and a BAC of 0.08% or higher creates a presumption of impairment for most drivers, though you can still be charged with DUI even below that level if impairment is shown.
After arrest, there are two parallel processes: the criminal case and the DMV administrative process. You typically have 10 days from the date of arrest to request a DMV hearing to challenge your license suspension. If you do not request this hearing, your license may be automatically suspended. The criminal case will proceed through arraignment, pretrial hearings, and potentially trial or resolution through negotiation.
There are also potential defenses in DUI cases, depending on the facts. These may include challenging the legality of the stop (no reasonable suspicion), disputing the reliability or administration of FSTs, questioning whether probable cause existed for the arrest, and attacking the accuracy of chemical test results. BAC defenses may involve issues such as improper calibration of breath machines, contamination or fermentation in blood samples, rising blood alcohol levels (where BAC increases after driving), or errors in handling and testing.
Penalties for a DUI can vary depending on whether it is a first or subsequent offense but may include fines, probation, DUI education programs, license suspension, and possible jail time, with increased consequences for aggravating factors like high BAC, accidents, or prior convictions.
This information is provided for educational and informational purposes only, is not legal advice, and does not create an attorney-client relationship. If you are facing a DUI charge, it is always best to consult with a licensed California DUI defense attorney to evaluate the specific facts of your case and protect your rights.
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